CAJ | 학술논문

在氮、磷、钾肥用量处于最佳施肥量，土壤有效锌含量1.0~1.5 mg/kg试验条件下，水稻增施锌肥后，成穗数、每穗实粒数、千粒重、株高、穗长等均有不同程度的增加，产量明显提高，以施硫酸锌22.5 kg/hm2的处理最高，平均比不施锌处理增产12.7%。不同类型土壤表现一致，但潮土施锌增产幅度明显高于水稻土，且以成穗数增加为主，水稻土处理每穗粒数明显高于潮土处理。通过回归分析，水稻适宜施锌量为21.5~23.0 kg/hm2，产量可达9300~9800 kg/hm2。水稻土壤有效锌临界值指标1.48 mg/kg。
재담、린、갑비용량처우최가시비량，토양유효자함량1.0~1.5 mg/kg시험조건하，수도증시자비후，성수수、매수실립수、천립중、주고、수장등균유불동정도적증가，산량명현제고，이시류산자22.5 kg/hm2적처리최고，평균비불시자처리증산12.7%。불동류형토양표현일치，단조토시자증산폭도명현고우수도토，차이성수수증가위주，수도토처리매수립수명현고우조토처리。통과회귀분석，수도괄의시자량위21.5~23.0 kg/hm2，산량가체9300~9800 kg/hm2。수도토양유효자림계치지표1.48 mg/kg。
Under test condition of the nitrogen, phosphorus, potassium in the optimum amount of fertilization and the soil available zinc content of 1.0~1.5 mg/kg, the ear number, grains per panicle, 1000-grain weight, plant high, ear length and yield increased with the increase of zinc fertilizer. The results showed that the yield of rice was highest when the amount of zinc sulfate was 22.5 kg/hm 2, it increased by 12.7% compared to the control. The trends of different soil were similar. The yield in fluvio-aquic soil increased more than that of paddy soil, the ear number in fluvio-aquic soil was higher, but the grains per panicle in paddy soil was higher than that of fluvio-aquic soil. Regressive analysis showed that the optimum amount of zinc sulfate was 21.5~23.0 kg/hm 2, the yield reached 9300~9800 kg/hm2. The critical value of soil available zinc deficiency for rice was 1.48 mg/kg.